<template>
  <transition name="slide" mode="in-out">
    <music-list :bg-image="bgImage" :title="title" :songs="songs"></music-list>
  </transition>
</template>
<script>
import { mapGetters } from "vuex";
import { ERR_OK } from "api/config";
import { getSingerDetail } from "api/singer";
import createSong from "common/js/song";
import MusicList from "components/music-list/music-list";
export default {
  components: {
    MusicList
  },
  data() {
    return {
      songs: []
    };
  },
  computed: {
    title() {
      return this.singer.name;
    },
    bgImage() {
      return this.singer.avatar;
    },
    ...mapGetters(["singer"])
  },
  created() {
    this._getSingerDetail();
  },
  methods: {
    _getSingerDetail() {
      if (!this.singer.id) {
        this.$router.push("/singer");
        return;
      }
      getSingerDetail(this.singer.id).then(response => {
        if (response.code === ERR_OK) {
          this.songs = this._normalizeSongs(response.data.list);
        }
      });
    },
    _normalizeSongs(list) {
      let ret = [];
      list.forEach((item, index) => {
        // 只获取了 5 条播放地址
        if (index > 4) {
          return ret;
        }
        let { musicData } = item;
        // songid与albummid必须传入
        if (musicData.songid && musicData.albummid) {
          ret.push(createSong(musicData, index));
        }
      });
      return ret;
    }
  }
};
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
.slide-enter-active, .slide-leave-active {
  transition: all 0.3s;
}

.slide-enter, .slide-leave-to {
  transform: translate3d(100%, 0, 0);
}
</style>